353 Hits in 6.0 sec

Precision Measurements of AC Josephson Voltage Standard Operating Margins

C.J. Burroughs, S.P. Benz, P.D. Dresselhaus, Y. Chong
2005 IEEE Transactions on Instrumentation and Measurement  
Using a Fast Fourier Transform spectrum analyzer and an ac-dc transfer standard, we characterize ACJVS operating margins by performing "flat-spot" measurements at the level of a part in 10 6 for all eight  ...  Recent advances in circuit design and fabrication of superconducting integrated circuits have enabled us to demonstrate an ac Josephson voltage standard (ACJVS) that generates both ac and dc waveforms  ...  This system can generate a variety of precision voltage waveforms, including single-tone ac sinewaves and dc voltages so that it can be used as a quantum-based voltage standard for ac metrology.  ... 
doi:10.1109/tim.2004.843070 fatcat:6vywjnediffilh4oakfoacmtwi

100 mV AC-DC Transfer Standard Measurements Using An AC Josephson Voltage Standard

C.J. Burroughs, S.P. Benz, P.D. Dresselhaus
2006 NCSLI Measure  
This work demonstrates the feasibility of a practical ac Josephson voltage standard based upon a quantum voltage source that produces precisely calculable ac and dc voltages.  ...  NIST is implementing the Josephson arbitrary waveform synthesizer as an ac Josephson Voltage Standard (ACJVS).  ...  We thank Joe Kinard and Tom Lipe at NIST for helpful conversations and for use of their ac-dc transfer standard.  ... 
doi:10.1080/19315775.2006.11721322 fatcat:uw2fcvljuvc6vi6dpjidh4hgsa

ACJVS operating margins using a ternary arbitrary bitstream generator

Ernest Houtzager, Samuel P. Benz, Helko E. van den Brom
2008 2008 Conference on Precision Electromagnetic Measurements Digest  
We describe measurements with a pulse-driven AC Josephson voltage standard (ACJVS) that uses a ternary arbitrary bitstream generator as the bias source.  ...  From these measurements we conclude that the circuit is operational for voltages up to 220 mV rms. We present a measured spectrum and operating margins for different voltages.  ...  Acknowledgements We appreciate the superconducting circuit fabrication and system integration expertise of Paul Dresselhaus, Norm Bergren and Charlie Burroughs.  ... 
doi:10.1109/cpem.2008.4574645 fatcat:bw4q47cq4rfh7gduvcnjsbcefu

AC and DC voltages from a Josephson arbitrary waveform synthesizer

S.P. Benz, C.J. Burroughs, P.D. Dresselhaus, L.A. Christina
2001 IEEE Transactions on Instrumentation and Measurement  
We present the first ac-dc and ac-ac voltage measurements of the synthesizer at 3.65 mV using an ac-dc thermal transfer standard.  ...  This quantum-based standard source can be used to measure the ac-dc difference of thermal transfer standards at small voltages.  ...  Parker for the use of their thermal transfer standard and many helpful discussions. They would also like to thank F. Walls and C. Hamilton for helpful conversations.  ... 
doi:10.1109/19.918096 fatcat:iykixiis3naqlngl24csvtnbwm

Systematic-Error Signals in the AC Josephson Voltage Standard: Measurement and Reduction

R. Pinheiro Landim, S.P. Benz, P.D. Dresselhaus, C.J. Burroughs
2008 IEEE Transactions on Instrumentation and Measurement  
We investigate the dominant frequencydependent systematic error signals (SES) in the ac Josephson voltage standard.  ...  We demonstrate that reduction of the SES using various techniques greatly improves agreement between the ac-dc differences of the two arrays and improves the absolute ac voltage accuracy.  ...  Two Josephson arrays that are each apparently on operating margins should be well matched.  ... 
doi:10.1109/tim.2007.915100 fatcat:lppgszzcpjhwnd7hnw3na32te4

An AC Josephson Voltage Standard for AC–DC Transfer-Standard Measurements

M. Merimaa, K. Nyholm, M. Vainio, A. Lassila
2007 IEEE Transactions on Instrumentation and Measurement  
Our ACJVS measurements agree with the uncertainty budget of ac-dc difference calibrations made of this transfer standard by use of conventional techniques.  ...  Using this system, we synthesized dc voltages and audio-frequency sine waves in order to measure ac-dc differences on the 22 mV and 220 mV ranges of a commercial thermal transfer standard.  ...  Wagle of National Instruments for suggestions in optimizing the digitizer, and N. Faulkner and D. Deaver at the Fluke Primary Standards Laboratory for insights regarding the transfer standard.  ... 
doi:10.1109/tim.2007.891153 fatcat:7xwdsm5xtvbfhaohlyysnp6mmm

A 10 Volt "Turnkey" Programmable Josephson Voltage Standard for DC and Stepwise-Approximated Waveforms

C. J. Burroughs, A. Rüfenacht, P. D. Dresselhaus, S. P. Benz, M. M. Elsbury
2009 NCSLI Measure  
PJVS systems are quite different from the ac Josephson Voltage Standard (ACJVS), which is based on high-speed pulsedriven arrays that are useful for synthesizing precision waveforms at much higher frequencies  ...  This next-generation Josephson voltage standard system will more closely resemble "turnkey" operation, because it will exploit the advantages of non-hysteretic junction technology and incorporate more  ... 
doi:10.1080/19315775.2009.11721485 fatcat:h6yjaftztvhonnvx6yrjkdpg2u

Progress toward a 1 V pulse-driven ac Josephson voltage standard

S.P. Benz, P.D. Dresselhaus, N.F. Bergren, R.P. Landim
2008 2008 Conference on Precision Electromagnetic Measurements Digest  
We present a new record root mean square (rms) output voltage of 275 mV, which is a 25% improvement over the maximum that is achieved with previous ac Josephson voltage standard (ACJVS) circuits.  ...  We demonstrate the operating margins for these circuits and use them to measure the harmonic distortion of a commercial digitizer.  ...  A summary version of this paper is included in the 2008 Conference on Precision Electromagnetic Measurements Conference Digest [11] .  ... 
doi:10.1109/cpem.2008.4574646 fatcat:dbczlkkxojc6rg4p7fryyscxdi

Pulse-Bias Electronics and Techniques for a Josephson Arbitrary Waveform Synthesizer

Samuel P. Benz, Steven B. Waltman
2014 IEEE transactions on applied superconductivity  
Ten years later, a commercial ac standard was calibrated at an output root-mean-square (RMS) amplitude of 100 mV with the first practical superconducting digital-to-analog converter.  ...  The Josephson arbitrary waveform synthesizer (JAWS) is a series array of thousands of superconducting Josephson junctions that are biased by current pulses such that the array produces voltage waveforms  ...  Dresselhaus for many years of collaboration and assistance in developing the pulsedrive instrumentation.  ... 
doi:10.1109/tasc.2014.2338326 fatcat:aggu2w6tjrcpdcdvxyqnbspcwu

AC josephson voltage standard error measurements and analysis

C.J. Burroughs, S.P. Benz, P.D. Dresselhaus
2003 IEEE Transactions on Instrumentation and Measurement  
Index Terms-AC metrology, Josephson voltage standard, precision ac source.  ...  In this paper, we present measurements of several significant error sources that must be considered in order to create an intrinsic ac voltage standard at these frequencies.  ...  our rms voltage-measuring instrument (in this case an ac/dc transfer standard).  ... 
doi:10.1109/tim.2003.811685 fatcat:e4g2pmuqmfcuzlpifi6mnyle6q

Tests on waveform synthesis in a new cryocooler setup

A. Sosso, B. Trinchera, P. Durandetto, E. Monticone, O. Kieler, R. Behr, J. Kohlmann
2016 2016 Conference on Precision Electromagnetic Measurements (CPEM 2016)  
ACKNOWLEDGEMENT The authors gratefully acknowledge the contribution of D. Serazio for designing and manufacturing mechanical parts of the cryogenic apparatus and R. Cerri for the electronics.  ...  Operation of Josephson standards inside a cryocooler is interesting to simplify their use, allowing more laboratories to perform ultimate accuracy calibrations.  ...  We developed a cryocooler-based Josephson system that can be operated both with programmable and pulse-driven standards.  ... 
doi:10.1109/cpem.2016.7540563 fatcat:txchdzmazjefjieo2tymbehcaa

Precision Measurements Using a 300 mV Josephson Arbitrary Waveform Synthesizer

S.P. Benz, P.D. Dresselhaus, C.J. Burroughs, N.F. Bergren
2007 IEEE transactions on applied superconductivity  
Index Terms-AC measurements, AC voltage standard, digital-to-analog converter, Josephson arrays, Josephson devices.  ...  We also demonstrate that quantum-based synthesized arbitrary waveforms (not just sine waves) can be used for precision measurements of a high-performance commercial analog-to-digital converter.  ...  INTRODUCTION N IST has been developing a pulse-driven Josephson digital-to-analog converter as an ac Josephson voltage standard (acJVS) and as a Josephson arbitrary waveform synthesizer (JAWS) for over  ... 
doi:10.1109/tasc.2007.898138 fatcat:3npqef6agbemdc6p5lbsktwehy

Cryocooled Josephson standards for AC voltage metrology

P Durandetto, A Sosso, E Monticone, B Trinchera, M Fretto, V Lacquaniti
2017 Journal of Physics, Conference Series  
A new experimental setup based on a two-stage Gifford-McMahon cryocooler has been developed at INRiM for the operation of AC-Josephson voltage standards.  ...  Research on Josephson voltage standards is aiming at a fundamental change also in the metrology of the volt for AC and arbitrary waveforms: programmable Josephson voltage standards converting a digital  ...  Lately, voltage standard research has focused on the metrological application of Josephson effect for AC voltages in a wide range of frequencies and amplitudes.  ... 
doi:10.1088/1742-6596/841/1/012031 fatcat:ni34hd54dbawfaaow6wzv5eexe

1 volt DC programmable Josephson voltage standard

C.J. Burroughs, S.P. Benz, T.E. Harvey, C.A. Hamilton
1999 IEEE transactions on applied superconductivity  
The rapid settling time (1 µs), large operating current margins (2 to 4 mA), and inherent step stability of this new system make it superior to a conventional JVS for many dc measurements.  ...  NIST has developed a programmable Josephson voltage standard (JVS) that produces intrinsically stable voltages that are programmable from -1.1 V to +1.1 V.  ...  In order for the SNS programmable chips to be used in a voltage standard, it is important that the operating margins and step flatness be verified immediately before any measurements using the precision  ... 
doi:10.1109/77.783938 fatcat:foopxrqjm5aztp5rj5vr67ynti

Resonance-Free Low-Pass Filters for the AC Josephson Voltage Standard

M. Watanabe, P.D. Dresselhaus, S.P. Benz
2006 IEEE transactions on applied superconductivity  
Moreover, the operating margins of the ac Josephson voltage standard were improved.  ...  We have designed and characterized superconducting integrated circuits for the ac Josephson voltage standard that demonstrate significantly improved performance.  ...  Burroughs for instrumentation and measurement assistance, and Y. Chong for fabrication assistance.  ... 
doi:10.1109/tasc.2005.863533 fatcat:x2fl3oufnfae7bvkzkemyywtmi
« Previous Showing results 1 — 15 out of 353 results